procural vs procuration

procural

noun
  • The act of procuring something. 

procuration

noun
  • The act of procuring; procurement. 

  • The management of another's affairs. 

  • A sum of money formerly paid to the bishop or archdeacon, now to the ecclesiastical commissioners, by an incumbent, as a commutation for entertainment at the time of visitation; called also proxy. 

  • The instrument by which a person is empowered to transact the affairs of another; a proxy. 

How often have the words procural and procuration occurred in a corpus of books? (source: Google Ngram Viewer )